Toyota plans to reproduce AE86 Twin Cam engine parts

Toyota has announced its intentions to reproduce and reissue parts for the 4A-GE-type engine of the AE86 Corolla Levin and Sprinter Trueno, commonly referred to in Ireland as the Twin Cam.

This is set to be done through Toyota’s GR Heritage Parts Project, an initiative to reproduce discontinued service parts and reissue them as new genuine parts to meet customers’ desires to keep on driving their beloved cars full of memories.

Currently, more than 200 parts for a total of eight vehicle models are being reissued and resold under the project.

Set to join the GR Heritage Parts lineup this time are a cylinder head sub-assembly and a cylinder block sub-assembly for the aforementioned two AE86 vehicle models.

These two GR Heritage Parts ― while retaining their original basic design and specifications ― have been modernised using the latest simulation technology, manufacturing methods, and materials.

The cylinder head sub-assembly features combustion chambers with additional machining that lessens the untouched cast surface area, reducing differences among individual engines that arise from slight variances in compression ratios.

The intake ports undergo a coating process to reduce pre-polishing surface irregularities. Cam cap knock pins, which were originally only partially used, have been added throughout for improved assembly workability.

The cylinder block sub-assembly features cylinder bores that undergo a modern honing process to improve bore machining precision. Durability has been improved through the use of higher-rigidity cast iron and simulation-based modification of the crank-cap structure.

The scheduled sales launch for these new Heritage Parts is May 2026, which Toyota says is subject to change.